Clutter-Resistant Vital Sign Detection Using Amplitude-Based Demodulation by EEMD-PCA-Correlation Algorithm for FMCW Radar Systems

Ching Yao Huang, Guan Wei Fang, Huey Ru Chuang, Chin Lung Yang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

FMCW radar systems enable remote vital sign and range detection but suffer from proximity clutter issues. When a large clutter exists around the target of interest, capture effect occurs and the reflected waveform from clutter would dominate the phase of the baseband signal, destroying the vital sign detection. This paper presents a novel and clutter-resistant demodulation to extract slow-time signal under strong reflected interference signals of a stationary or non-stationary clutter at close range. By applying amplitude-based demodulation, signals of the stationary clutter can be distinguished and excluded. Therefore, vital sign can be clearly determined even under the condition of strong close reflected interferences. Furthermore, extracting heartbeat clearly from FMCW under interference of clutter is relatively difficult using traditional complex signal demodulation algorithms. This paper proposes a novel EEMD-PCA-Correlation algorithm to solve this problem. From the experiment results, the average error of heartbeat with a clutter within 1 cm is 0.537%.

Original languageEnglish
Title of host publicationEuRAD 2019 - 2019 16th European Radar Conference
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages293-296
Number of pages4
ISBN (Electronic)9782874870576
Publication statusPublished - 2019 Oct
Event16th European Radar Conference, EuRAD 2019 - Paris, France
Duration: 2019 Oct 22019 Oct 4

Publication series

NameEuRAD 2019 - 2019 16th European Radar Conference

Conference

Conference16th European Radar Conference, EuRAD 2019
CountryFrance
CityParis
Period19-10-0219-10-04

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All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Instrumentation

Cite this

Huang, C. Y., Fang, G. W., Chuang, H. R., & Yang, C. L. (2019). Clutter-Resistant Vital Sign Detection Using Amplitude-Based Demodulation by EEMD-PCA-Correlation Algorithm for FMCW Radar Systems. In EuRAD 2019 - 2019 16th European Radar Conference (pp. 293-296). [8904708] (EuRAD 2019 - 2019 16th European Radar Conference). Institute of Electrical and Electronics Engineers Inc..